Senior Full Stack Developer (Contract)React.js | Node.js / C# (.NET Core) | PostgreSQL | Redis | CI/CDOnsite | London- this is a Soho based role 5 days per week 3-Month Contract (with potential to extend)

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We're working with a high-growth, tech-led organisation that is seeking an experienced Senior Full Stack Developer to join their team on a full-time, onsite contract basis. This is an exciting opportunity to support the ongoing development and maintenance of an internal software suite that powers complex digital systems.

If you're a technically strong full stack developer with a solid understanding of infrastructure and documentation, and you're open to a hands-on contract role within a dynamic, creative tech environment - we'd love to hear from you.

You must have the full right to work in the UK and be avaiable to work on site in Central London near Soho 5 days per week. This is not negotiable.

• Lead the design, development, deployment, and maintenance of internal and third-party web applications.

• Work across the full stack, with a focus on React.js front-end and Node.js or C# (.NET Core) back-end logic.

• Manage and optimise data handling using PostgreSQL; implement Redis for caching and session management.

• Build and maintain CI/CD pipelines; contribute to DevOps practices across environments.

• Deploy and configure applications on remote Linux and Windows servers.

• Write clean, well-documented, and maintainable code, and contribute to robust documentation across architecture, APIs, deployment, and user workflows.

• Collaborate with cross-functional teams including UI/UX, product managers, and QA.

• Troubleshoot and resolve production issues efficiently with minimal downtime.

• Strong experience developing scalable web applications using React.js and Node.js or C# (.NET Core).

• Solid background in PostgreSQL schema design and optimisation.

• Hands-on experience with Redis integration.

• Familiarity with CI/CD pipeline development and deployment workflows.

• Proven ability to document complex technical systems clearly and concisely.

• Confident deploying to and managing applications on remote Linux/Windows servers.

• Experience working closely with solutions architects or technical operations leads.

• Start: Within 2 weeks

• Contract: 3 months initially, with potential to extend

• Interview process: teams Video interview

If you're a technically strong full stack developer with a solid understanding of infrastructure and documentation, and you're open to a hands-on contract role within a dynamic, creative tech environment - we'd love to hear from you.

Sphere Digital Recruitment is acting as an Employment Business in relation to this vacancy.